One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,24,32,23,28,22,27)(19,29,31,25,21,26,20,30)(1,3,4,7)(2,5,6,8)(9,11)(10,13)(12,15)(14,16)(17,19,23,21)(18,25,28,30)(20,22,31,24)(26,32,29,27)(2,6)(5,8)(10,14)(11,15)(17,20)(18,25)(19,24)(21,22)(23,31)(26,32)(27,29)(28,30) involution — undirected(9,11)(10,13)(12,15)(14,16)(17,21,23,19)(18,26,28,29)(20,22,31,24)(25,32,30,27)(11,15)(13,16)(19,21)(20,31)(25,30)(26,29) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.